Accessing Xp Share Drops Both Wifi Connections?

I have an XP pro x32 machine on wireless with shared folders, a 7 Ultimate x64 machine (fresh install) on wireless, and Linksys Wireless/wired router (I'll get the model number later, can't remember). I've had the shares on xp set up for a long time and never had an issue with them on XP or Vista machines. The two machines are on the same router, same subnet, same workgroup (home), individually assigned IPs, and can access the outside fine. 7 does not have a "share group" set up. Whenever I access a shared folder from the 7 machine it connects fine until I start to transfer files. It will make it anywhere from a few seconds to a couple of minutes before the wireless connections on both machines are dropped. The connection problems only happen when copying shared files; I can browse shared folders or internet all I want.Side note that may or may not have any bearing: I had been having an issue where the wireless adapter didn't exist (device manager or anywhere else) after coming back from sleep. That required me to reboot to see it again. I fixed it by disabling the save power feature on the driver and disabling sleep mode.